查询词典 ecosystem

The use of the carbon cycle model with an explicit ecosystem is a developing trend in the study of biogeochemical cycle of carbon dioxide and its response to global change.

还讨论了模拟海洋碳循环的现状和存在的问题。

S a main source and sink of nitrogen from lake wetland ecosystem, lake sediment has an important significance for biogeochemical cycle of nitrogen.

bstract 湖泊底泥作为湖泊湿地生态系统中氮素的主要源与汇，对氮素的生物地球化学循环具有重要意义。

The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements.

近20年由於「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对於这些元素在自然生態系中生地化循环的瞭解。

According to the new vision of the committee, NEON should be focused on the six critical environmental challenges that the nation faces, including biodiversity, species composition and ecosystem functioning; ecological aspects of biogeochemical cycle, ecological implcations of climate change, ecology and evolution of infectious diseases, invasive species and land use and habitat alteration.

新的方案建议NEON应重点关注生物多样性、物种组成与生态系统功能、生物地球化学循环的生态学影响、气候变化的生态学内涵、传染病的生态学和演化、入侵种以及土地利用和栖息地的丧失这6个美国国家层次当前所面临的最严峻的环境挑战。

Wetland biogeochemistry is the core of wetland ecosystem ecology process.

湿地生物地球化学是湿地生态系统生态过程的核心研究内容。

It is dedicated to teaching and research ecosystem function, ocean science, environmental protection, Biogeochemistry, Tropical Environmental Science, etc.

主要致力于生态系统功能、海洋科学、环保、生物地球化学、热带环境科学等学科的教学与研究。

They are storehouses of biological diversity and endangered species and an essential part of the global ecosystem.

它们是生物多样性和濒危物种的仓库，是全球生态系统的一部分。

Biological diversity and ecosystem function in human society is facing has become a major scientific question.

与生态系统功能的关系已成为当前人类社会面临的一个重大科学问题。

Biological diversity is a basis of human's life and development. The stability and complicacy of landscape ecosystem depends on it.

生物多样性是人类生存和发展的基础，它决定着景现生态系统的稳定性和复杂性。

Therefore, the research scope of modern ecology in individual organisms, population and biological communities, human society has been expanded to include various types of compound ecosystem system.

因此近代生态学研究的范围，除生物个体、种群和生物群落外，已扩大到包括人类社会在内的多种类型生态系统的复合系统。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48